Hydrocarbon-burner.



W. J. BEST.

HYDROUARBON BURNER.

APPLICATION FILED NOV. 23, 1908.

944,070. Patented Dec.21, 1909.

2 SHEETS-SHEET 1,

W. J. BEST.

HYDROGARBON BURNER.

APPLICATION FILED NOV.23, 1008.

944,070. Patented Dec. 21, 1909.

2 SHEETS-SHEET Z.

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WILLIAM J. BEST, OF DETROIT, MICHIGAN.

HYDROCARIBON-BURNER.

Specification of Letters Patent.

Patented Dec. 21, 1909.

Application filed November 23, 1908. Serial No. 464,163.

To all whom it may concern:

Be it known that I, IVILLIAM J. BEs'r, a citizen of the United States,and a resident of Detroit, in the county of \Vayne and State ofMichigan, have invented a new and Improved Hydrocarbon-Burner, of whichthe following is a specification.

My invention relates to improvements in evaporating hydrocarbon burners,and its object is to provide simple and effective means to insure theevaporation of the liquid fuel.

My invention consists in combination with a main burner, an evaporatorto supply fuel therefor, and a sub-burner to heat the air which passesthrough the evaporator, of a pilot light so arranged and constructedthat the ignition of the sub-burner is insured.

It further consists in the novel arrangement and construction of thesub-burner as shown in the accompanying drawings, in which Figure 1 is avertical cross section of my improved construction. Fig. 2 is a verticalcross section on the line 22 of Fig. 1. Fig. 3 is a view on a largerscale of the cross section of the sub-burner shown in Fig. 1. Figs. l, 5and G are views similar to Fig. 3 of various modifications of theconstruction of the sub burner.

Similar reference characters refer to like parts throughout the severalviews.

Hydrocarbon vapor burners constructed with a main burner and asub-burner, an evaporator, a pipe leading from the evaporator to themain burner and the sub-burner, and a pipe for conveying the air heatedby the sub-burner to the evaporator, have always been liable to have thesub-burner extinguished. In this present construction the parts areeither so arranged and constructed, or a pilot burner has been provided,as to insure the constant ignition of the sub-burner. As the operatoralways has the main burner plainly in view, it is desirable that this bethe source of ignition. It is also desirable, although not necessary,that the sub-burner be near the main burner so as to render theoperation of the pilot burner most effective. The greater the dis tancebetween the burners, the larger will be the amount of fuel consumed bythe pilot burner.

In Figs. 1, 2 and 3 the main burner cham her 1 is shown cylindricalalthough any other desired form can be employed. The

burner 2 is of any suitable foraminous material and of any desiredcontour, according to the fuel employed and the ideas of themanufacturer, but it is preferably a slotted circular casting.Connecting to the chamber 1, preferably at the lower part thereof, is asuitable tube or pipe 3 which extends upwardly and connects to theevaporator chamher at. 1V ithin this chamber is a gauze or perforatedsheet 5 upon which the liquid hydrocarbon falls from the valve 6 thatconnects to the source of supply. The rate of flow may be watchedthrough a window 7. The air passing through the screen and down the pipe3 evaporates the fuel on the screen 5 in the usual manner.

The wall of the chamber 1 is perforated or formed with slots 8, aroundwhich slotted portion is secured a short tube 9 having side openings 10and top opening 11. The hydrocar'bon vapors pass out of the chamber 1into this tube 9 where they burn, the opening 11 permitting theirignition and the openings 10 permitting air to pass to the flame. Thistube and the bars 12, of a thin plate of cast iron, form the sub-burner.

A bracket 14, connected to the tube 9, furnishes a support for the lowerend of the tube or pipe 15 that extends to the evaporator chamber l andcommunicates therewith above the screen 5. \Vhenever the vapor isignited at the openings 8, the products of combustion and hot air willrush up the tube 15 drawing with them a current of air through theopening between the lower side of the tube 9 and the lower end of thepipe 15. It will be noticed that this subburner may be located whereverelse desired so long as a supply of air can be drawn up into the pipe15. In order to ignite this sub-burner a pilot burner may be employed,which may be constructed as follows. A flat casing 16 is attached to theplate 17 of the subburner or to the body 1, if the plate be omitted.This casing receives fuel vapor through a passage 18 from the cylinder 1which fuel passes out through the long slot 19 and short slots 20 and21. A hood 22 secured to the bracket let prevents dust. from fallinginto these slots and also shelters the flame. \Vhen the fuel vapor isignited over the main burner 2, the flame will pass to the vaporescaping through the openings 20, then down along the slot 19 to theslots 21 and then through the opening 11, igniting the fuel of thesub-burner. The casing 16 V and burn over the plate 23.

forms a pilot burner which transfers the flame of the main burner to thesub-burner whenever necessary. The channel beneath the hood should bejust sufficient to permit the flame to run along the slot 19. The widthof all the slots should be less than sufficient to permit the flame topass through.

In the modified form shown in Fig. a, the main chamber 1, burner 2, andtubes 3 and are as before described. The plate 23 has slots 2st throughwhich vapor may pass When it first escapes, it passes upward through theopening 25 in the tube 26 and is deflected toward the main burner 2, bythe hood 27 where it will ignite, and the flame will travel back 7 tothe plate 23 and cause a current of air to described constructions.

pass up the tube 15. it will be noticed that this construction has nopilot burner but has a pilot channel.

In Fig. 6 the shape of the pilot channel and the hood 30 ditters fromthe previous The hood 30 is formed integral with the tube 31, and theflame will travel down the passage 33formed by this hood and the vaporwill then burn over the plate 32.

Fig. 5 again shows both a pilot burner and a pilot channel for the same.A ring 34 is secured at the upper end of the chamber and has slots toform the main burner, slots 36 to form the sub-burner, and slots 37 toform the pilot burner. The vapor passing through the slots 37 willignite from the main burner and the flame will travel through theopening 38 to the sub-burner, and the hot air and 7 products ofcombustion will pass out of the tube 39 into the pipe 15. The hood 40again shelters the flame of the pilot burner.

I claim:

1. A hydrocarbon burner comprising a main burner chamber, a main burnerat the upper end of the same, an evaporator connected to the main burnerchamber, a subburner connected to the main burner chamber, an air andheat conductor leading from the subburner to the evaporator, and a pilotburner adjacent to the sub-burner and the main burner to transfer aflame to the sub-burner.

2. A hydrocarbon burner comprising a main burner, an evaporatorconnected thereto, a sub-burner, a connector for conveying heated airfrom the sub-burner to the evaporator, and a pilot burner adjacent themain burner and sub-burner to transfer a flame from one to the other.

3. A hydrocarbon burner comprising a main burner and chamber, anevaporator, an evaporator channel connecting the evaporator with saidchamber, a sub-burner outside the main burner chamber, a foraminous portion or wall separating the sub-burner from said chamber through whichsaid chamber communicates with the sub-burner, and an air and heatconducting pipe leading to the evaporator having its base in proximityto the sub-burner, whereby flame and heat from the sub-burner will enterthe base of said pipe.

4e. A hydrocarbon burner comprising a main burner chamber, anevaporator, an evaporator channel connecting the evaporator with saidchamber, an air and heat conducting pipe leading to the evaporator, asub-burner located between the main burner chamber and the evaporator toheat the air inside the air and heat conducting pipe, and a foraminousportion separating the sub -burner from said chamber and through whichsaid chamber communicates with the sub-burner.

5. A hydrocarbon burner comprising a main burner cap andchamber, anevaporator, an evaporator channel connecting the evaporator with saidchamber, a sub-burner, a foraminous portion separating the subburnerfrom said chamber and through which said chamber communicates with thesub-burner, an air and heat conducting pipe leading to the evaporatorhaving its base in proximity to the sub-burner whereby flame and heatfrom the sub-burner will enter the base of said pipe, and a pilotchannel leading from the main burner to the sub-burner.

6. A hydrocarbon burner comprising a main burner provided with a chamberand with a burner cap, an evaporator, an evaporator channel connectingthe evaporator with said chamber, a sub-burner located outside saidchamber in proximity to the burner cap whereby the .subburner will belighted by flame from the burner cap, a toraminous portion separatingthe sub-burner from said chamber and through which said chambercommunicates with the sub-burner, and an air and heat conducting pipeleading to the evaporator having its base in proximity to thesub-burner.

7. A hydrocarbon burner comprising a main burner chamber and a burnercap, an evaporator, an evaporator channel connecting the evaporator withsaid chamber, an air and heat conducting pipe leading into theevaporator, and a sub-burner located outside said chamber at the base ofthe air and heat conducting pipe and in proximity to the burner capwhereby the sub-burner will be lighted from the flame above said cap,and a foraminous portion separating the subburner from said chamber andthrough which said chamber communicates with the sub-burner.

8. A hydrocarbon burner comprising a main burner chamber and cap, anevaporator, an evaporator channel connecting the evaporator with saidchamber, a sub-burner outside said chamber, a foraminous portionseparating the sub-burner from said chamber and through which saidchamber communicates with the sub-burner, an air and heat conductingpipe leading into the evaporator having its base in proximity to thesubburner, and a pilot burner connecting the main burner with thesub-burner, and feed openings from the chamber of the main burner to thepilot burner.

9. A hydrocarbon burner comprising a main burner chamber and cap, anevaporator, an evaporator channel connecting the evaporator with saidchamber, a sub-burner, a foraminous portion separating the subburnerfrom said chamber and through which said chamber communicates with thesub-burner an air and heat conducting pipe leading to the evaporatorhaving its base in proximity to the sub-burner, and a pilot burneradjacent the main burner and the sub-burner, and a hood to protect theflame when passin from the main burner by means of the pilot burner tothe sub-burner.

10. A hydrocarbon burner comprising a main burner chamber and burnercap, an evaporator, a vapor conveying pipe connecting the evaporatorwith the said chamber. a sub-burner located at the upper end of the mainchamber of the burner, a foraminous portion separating the sub-burnerfrom said chamber and-through which said chamber communicates with thesub-burner, a pilot channel leading from the main burner to the 30sub-burner, a pilot burner in said channel by means of which the flamemay pass to the sub-burner.

In testimony whereof I have signed this specification in the presence oftwo subscrib- 35 ing witnesses.

l/VILLIAM J. BEST. WVitnesses:

ELIZABETH M. BROWN, EDWARD N. PAGELSEN.

